JPS6233791Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a watering system for a loader (loading machine), which uses a shovel loader (tire type loader) or a tractor shovel (track type loader) to remove gravel, crushed stone, etc. The purpose of this method is to prevent dust from rising from the gravel when handling limestone, coke, coal, etc. (hereinafter referred to as "gravel, etc.").

Generally, a shovel loader or tractor shovel (hereinafter referred to as a ``loader'') is used to handle cargo such as gravel (for example, loading piled-up gravel onto a dump truck). However, when using the same loader to handle cargo such as gravel, when scooping up the gravel in a bucket, or placing the gravel scooped up in the bucket onto the bed of a dump truck, for example. When discharging, dust is thrown up, and the working environment is polluted by this flying up of dust, which causes problems such as affecting the health of the workers.

As a method to prevent dust from flying up during the handling of gravel and other cargo, attempts have been made to spray water on the gravel and other materials during cargo handling. Since the method uses a separate engine to drive the pump from the loader, it has the following problems: The engine needs to be warmed up in the winter, and it is not suitable for intermittent use.

The water sprinkling mechanism becomes larger (especially when a cell starter is attached) and weighs more, which creates problems in the installation space. (Therefore, it cannot be installed in small or mini loaders.) Since it is necessary to constantly drive the engine, there is a lot of wasted fuel, and replenishing the fuel is troublesome.

The reality is that these problems are occurring.

The present invention is an attempt to improve the conventional situation in view of the above-mentioned actual situation.A water sprinkling nozzle is attached to the bucket, and the water spray nozzle is attached to the bucket to prevent gravel, etc. This method prevents dust from flying up by sprinkling water on the bucket.In particular, the water sprinkling direction is always kept in the same direction without being affected by the vertical movement or vertical rotation of the bucket. Its feature is that it can be held in the position where it is facing.
That is, the gist of the present invention is that a pin formed in the shape of a round bar with a water passage communicating with the tank is fixed to the opening of the bucket, and a housing formed in a cylindrical shape with a nozzle attached to the pin is fixed. The nozzle is rotatably fitted loosely so as to be able to communicate with the water passageway, while the weight is attached to the housing at a constant angle of displacement with respect to the nozzle. be.

Hereinafter, specific embodiments of the present invention will be described with reference to the illustrative drawings.

1 to 5 are drawings showing the first embodiment, and in the overall view of the shovel loader shown in FIG. 1, A is a main body, and B is a front part of the main body A. The loader mechanism is shown. In the main body A, 1 is a front tire, 2 is a rear tire, and 3 is a frame mounted on both tires 1 and 2. The frame 3 consists of a rear frame 3b and a front frame 3a which is rotatably connected to the rear frame 3b via a center pin 3c, and a head guard 4 is provided upright on the rear frame 3b. A driver's cab 5 is provided. An engine (not shown) is mounted on the rear frame 3b, located behind the driver's cab 5, and is covered with a hood 6. A balance weight 22 is also fixed to the rear end of the rear frame 3b, and tanks C and C are installed on the balance weight 22 on both sides of the hood 6. The tanks C, C are installed on both sides of the hood 6 via hinges 23, 23 so as to be rotatable in the front and rear directions. The tank C has an inclined surface C' on its back surface, that is, on the side corresponding to the rear tire 2, and has an inverted right triangular shape with a thickness that gradually decreases from the upper end toward the lower end. It is formed by A filter unit 24 is built in the tank C, and a water sprinkling pipe 25a extends from the filter unit 24 toward the outside of the tank C, the tip of which is connected to the suction port _P1 of the water pump P. . The pump P is provided so as to be driven by a motor. The pump P is attached to the rear frame 3b at an arbitrary position, and the discharge port of the pump P is attached to the rear frame 3b.
A water sprinkling pipe 25b is extended from the _P2 side. The water sprinkling pipe 25b extends toward the loader mechanism B through the front frame 3a, and its tip is connected to the pin 16 of the nozzle mechanism D, as will be described later.

On the other hand, the aforementioned loader mechanism B is attached to the front arm 3a. The loader mechanism B consists of a lift arm 7 and a bucket 9.
is pivotally connected to the front frame 3a via a hydraulic cylinder 8 extending between the intermediate portion of the lift arm 7 and the front frame 3a so as to be freely rotatable in the vertical direction. A dump arm 10 is rotatably connected to the tip of the lift arm 7 with a bucket 9 located in the middle of the lift arm 7.
, a connecting rod 11 that connects the dump arm 10 and the bucket 9, and the dump arm 10.
The front frame 3a is pivotally connected to be rotatable in the vertical direction via a hydraulic cylinder 12 extending between the front frame 3a and the front frame 3a.

The bucket bag 9 has a substantially V-shaped cross-sectional shape that gradually narrows from the opening to the bottom, and a nozzle mechanism D for sprinkling water is provided at the opening of the bag bag 9. The nozzle mechanism D includes a housing 15 from which a nozzle 14 is projected, and a pin 16 that rotatably supports the housing 15. The nozzle mechanism D will be explained in more detail based on the enlarged views shown in FIGS. 2 and 3.

In both of the above drawings, 9 indicates the bucket bag mentioned above. From the same bucket 9, a pair of left and right brackets 1
3 and 13 extend in the direction of protruding from the opening, and a pin 16 is horizontally suspended at the tips of both brackets 13 and 13. The pin 16 has an arm 17 protruding at one end thereof in a direction perpendicular to the center line of the pin 16, that is, in the direction of extension of the diameter,
The distal end of the arm 17 is fixed to one of the brackets 13 via a bolt 18.

The pin 16 has a water passage 19a that extends in the direction along the center line, and a water passage 19b that branches diametrically from one end of the water passage 19a at the approximate center of the pin 16 in a generally T-shape. The above-mentioned water sprinkling pipe 25b is connected to one end of the pin 16 so as to communicate with the water passage 19a. A cylindrical housing 15 is rotatably supported on the pin 16. An annular groove 20 is formed in the inner circumference of the housing 15 in correspondence with the water passage 19b. Also the same housing 15
The nozzle 14 is provided protrudingly on the outer periphery so as to communicate with the annular groove 20, while a weight 2 is provided on the outer periphery at an appropriate displacement angle with respect to the nozzle 14.
1 is fixed. Note that the displacement angle can be arbitrarily selected.

FIG. 5 is a drawing showing the electric circuit of the above-mentioned sprinkler system, in which P is a pump, _S1 is a starter switch that is turned on in conjunction with a key switch during machine operation;
_S2 is an operation switch for operating pump P during watering according to the driver's will, _S3 is a reed switch that turns off when the liquid level in tank C falls below a set level, R is a relay, and E is a battery. show.

6 to 8 are drawings showing a second embodiment, in which a housing 15 in a nozzle mechanism D is shown.
A weight 21 is provided separately. The weight 21 is attached to the housing 15 via a tightening band 26 so that its displacement angle with respect to the nozzle 14 can be adjusted as desired.

FIG. 9 is a drawing showing the third embodiment,
A cap 27 is screwed onto the tip of the nozzle 22 so that it can move forward and backward. A water sprinkling hole 27' is opened at the tip of the cap 27 in correspondence with the water sprinkling hole 14' opening on the nozzle 14 side. ′ is established based on the following relationship.

Next, its effect will be explained.

In the first embodiment shown in FIGS. 1 to 5, FIG. 1 is a drawing showing the working state of the shovel loader, in which the lift arm 7 is moved forward and backward by moving the hydraulic cylinder 8 to move the front arm 3a. It can be rotated up and down as a fulcrum, and by moving the hydraulic cylinder 12 forward and backward, the bucket 13 can be rotated up and down at the tip of the lift arm 7 via the dump arm 10 and connecting rod 11. I can do it. Then, the lift arm 7 is lowered via the hydraulic cylinder 8, and with the bucket 9 in contact with the ground, the main body part A of the shovel loader is advanced toward the collecting yard for gravel, etc., thereby making it possible to shovel gravel, etc. Once completed, the bucket 9 is rotated upward via the hydraulic cylinder 12 with gravel etc. poured into the bucket 9, while the lift arm 7 is rotated upward via the hydraulic cylinder 12. By rotating it towards
The state shown by the solid line in FIG. 1, that is, the state in which transport is possible is obtained. Then, in this state, when the bucket 9 is transported to a predetermined position, such as the loading platform of a dump truck, the bucket 9 is rotated in a forward tilting direction via the hydraulic cylinder 12, thereby discharging the gravel, etc. in the bucket 9. You can.

During the above-mentioned cargo handling process, the operation switch _S2 is turned ON to drive the pump P, so that the water stored in the tank C passes through the filter unit 24 and the water sprinkler pipe 25a and is drawn into the pump P, and the water drawn into the pump P is discharged from the discharge port _P2 toward the water sprinkler pipe 25b. The water discharged toward the water sprinkler pipe 25b is then pumped through the water sprinkler pipe 25b and fed to the nozzle mechanism D.
The water pumped to the nozzle mechanism D in this manner passes through water passages 19a, 19b drilled in the pin 16 and is sprayed from the nozzle 14. That is, a water spraying action is obtained for the gravel, etc. This water spraying action prevents dust from being stirred up during the process of loading the gravel, etc. into the bucket 9, transporting it to a specified position, and discharging the gravel, etc.

On the other hand, in the nozzle mechanism D, the housing 15 from which the nozzle 14 is protruded is provided so as to be rotatable with respect to the pin 16 fixed to the bucket 9 side, and the housing 15 has a constant displacement angle with respect to the nozzle 14. Since the weight 21 is fixed, the nozzle 14 can always maintain a constant state against the rotation of the lift arm 7 and the bucket 9. That is, with the bucket 9 in contact with the ground, gravel or the like is scooped up, the bucket 9 is rotated upward while the lift arm 7 is rotated upward, and the bucket is transported to a predetermined position. In the process of discharging gravel, etc. by tilting the nozzle 9 forward, the nozzle 14 has the effect of always maintaining the water sprinkling direction in a constant direction (horizontal direction in the state shown in FIG. 1) with the weight 21 as the center of gravity. It will be done.
In addition, when the water in the tank C decreases and the amount of water falls below the preset level, the reed switch _S3 will automatically turn off and the pump P will turn off. Stop driving.

In the second embodiment shown in FIGS. 6 to 8, the weight 21 is
By changing the mounting position of the nozzle 14, the direction in which the nozzle 14 projects can be adjusted as desired. In other words, the effect of adjusting the watering angle can be obtained.

In the third embodiment shown in FIG. 9, a clearance is created between the water sprinkling hole 14' on the nozzle 14 side and the water sprinkling hole 27' on the cap 27 side by screwing the cap 27 as shown in FIG. By providing this clearance, a water spraying effect can be obtained, while by making the same clearance zero or close to zero, a spraying effect can be obtained.

The tank C is located at the rear end of the rear frame 3b, thereby increasing the stability of the aircraft in the main body A, and the tank C is located at a position corresponding to the rear tire 2. Since the tank C is provided with an inclined surface C' on the surface corresponding to the rear tire 2, the tank C can function as a mudguard.

The present invention is constructed as described above.
As mentioned above, by installing a nozzle mechanism located at the opening of the bucket and sprinkling water on gravel and other cargo during work, it is possible to prevent dust from flying up during the work. As a result, it is possible to prevent pollution of the working environment and maintain the health of workers, while also preventing spontaneous ignition when handling materials such as coal, coke, lime, etc. It has now become possible to improve the safety of the system.

In addition, in the present invention, a pin having a water passage communicating with the tank is fixed to the bucket side of the nozzle mechanism, and a housing with a nozzle protruding from the pin is fixed so that the nozzle communicates with the water passage. The weight is loosely fitted so that it can rotate freely, and the weight is attached to the housing at a constant angle of displacement with respect to the nozzle, so that the lift arm and bucket can be easily used when handling materials such as gravel. The rotating nozzle direction can always be maintained in a fixed direction,
By making it possible to keep the water sprinkling direction constant, it has become possible to enhance the water sprinkling effect.

Furthermore, in the case of the present invention, by using the motor as power to drive the pump as described above, the entire sprinkler system can be made more compact compared to conventional structures, and it can be mounted freely on the main body. In addition to being able to improve performance, watering can be performed immediately in the winter without the need for warm-up operation, and it is now possible to respond immediately to intermittent watering operations, while also reducing noise. This has resulted in various benefits such as eliminating the hassle of refueling.

[Brief explanation of the drawing]

Figures 1 to 5 are drawings showing the first embodiment, in which Figure 1 is a side view showing the entire shovel loader, and Figure 2 is a bucket part that fixes the nozzle mechanism of the shovel loader. 3 is a sectional view taken along the line - in FIG. 2, and FIG. 4 is a perspective view of the part where the tank of the shovel loader is installed.
FIG. 5 is an electrical circuit diagram. 6 to 8 are drawings showing the second embodiment, in which FIG. 6 is a front view of the nozzle mechanism, FIG. 7 is a perspective view thereof, and FIG. 8 is a schematic diagram of the bucket part showing the operating state. It is a diagram.
FIG. 9 is a drawing showing the third embodiment, and is a sectional view of the nozzle portion. A... Main body, B... Loader mechanism, C... Tank, C'... Inclined surface, D... Nozzle mechanism, P...
...Water pump, 1...Front tire, 2...Rear tire, 3...Frame, 3a...Front frame, 3b...Rear frame, 3c...Center pin, 4...Head guard, 5...Driver's cab, 6
... Hood, 7 ... Lift arm, 8 ... Hydraulic cylinder, 9 ... Bucket, 10 ... Dump arm, 11 ... Connecting rod, 12 ... Hydraulic cylinder, 13 ... Bracket, 14 ... Nozzle , 14'...Water hole, 15...Housing,
16... Pin, 17... Arm, 18... Bolt, 19a, 19b... Water passage, 20... Annular groove, 21... Weight, 22... Balance weight,
23... Hinge, 24... Filter unit, 2
5a, 25b...watering pipe, 26...tightening band, 27...cap, 27'...watering hole.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a loader equipped with a lift arm that is vertically rotatable and a bucket belt that is vertically rotatable at the tip of the lift arm, A pin formed in the shape of a round bar and having a water passage communicating with the tank is fixed to the opening of the tank, and a housing formed in the shape of a cylinder and having a nozzle is fixed to the pin. A water sprinkling device for a loader, comprising a weight that is rotatably fitted loosely into the housing so as to communicate with a waterway, and a weight is attached to the housing at a constant angle of displacement with respect to the nozzle. (2) A water sprinkling device for a loader as claimed in claim 1 of the Utility Model registration, wherein a weight is attached to the housing so that the displacement angle with respect to the nozzle can be freely adjusted. (3) A cap is provided that opens a water sprinkling hole that is larger in diameter than the water sprinkling hole that opens in the nozzle, and the cap is movable toward and away from the tip of the nozzle so that the clearance between the two water sprinkling holes can be adjusted. A water sprinkling device in a loader as claimed in claim 1 of the utility model registration claim.